401(k) · DOL Form 5500 · 2023

Alpha & Omega Semiconductor, Inc. 401(k) Plan

Data updated 2026-08-25

$83M
Total assets Below avg plan size
790
Participants Near avg headcount
90th
Percentile by assets National rank
$105,047
Avg per participant Below avg balance/head
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Official DOL plan name: Alpha & Omega Semiconductor, Inc. 401(k) Plan · Sponsored by Alpha & Omega Semiconductor, Inc. · California · Manufacturing

$83M in assets, 790 participants

Alpha & Omega Semiconductor, Inc.'s Alpha & Omega Semiconductor, Inc. 401(k) Plan reported $83M in total assets and 790 participants in its 2023 DOL Form 5500 filing, ranking in the 90th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • #15,923 in Manufacturing (18,722 peers)

Where Alpha & Omega Semiconductor, Inc. 401(k) Plan sits by assets

Alpha & Omega Semiconductor, Inc. 401(k) Plan sits in the top 10% of all filed plans by assets, $83M for 790 participants (~$105,047/participant), up 30.4% in 2023.

#15,923
in Manufacturing (18,722 peers)
+30.4%
assets growth YoY
0.8×
vs typical plan assets (national mean)

Alpha & Omega Semiconductor, Inc. 401(k) Plan's outsized position by total assets

Alpha & Omega Semiconductor, Inc. 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$82,987,263 Top 10% higher than 90% of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

Alpha & Omega Semiconductor, Inc. 401(k) Plan among mid-size filed plans by headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Alpha & Omega Semiconductor, Inc. 401(k) Plan sits mid-pack in the medium band (790 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Alpha & Omega Semiconductor, Inc. 401(k) Plan reported net income rose from -$3M in the plan year 2022 filing to $19M in the plan year 2023 filing.
  • Alpha & Omega Semiconductor, Inc. 401(k) Plan end-of-year assets rose from $64M in the plan year 2022 filing to $83M in the plan year 2023 filing.
  • Alpha & Omega Semiconductor, Inc. 401(k) Plan reported participants rose from 656 in the plan year 2022 filing to 790 in the plan year 2023 filing.

See the national 2022→2023 release diff →

EBSA filing schedule strip

Filing strip 770553536 · Alpha & Omega Semiconductor, Inc. PY 2023 · 401(k)

Alpha & Omega Semiconductor, Inc. 401(k) Plan · $83M · 790 · 90th

  • PHOTO $83M
  • PHOTO 790
  • PHOTO 90th
  • PHOTO 401(k)
  • PHOTO near Eileen Fisher, Inc. 401(k) Employee Savings Plan
  • PHOTO ind #15923

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Manufacturing retirement plans → · Plans in California →

Alpha & Omega Semiconductor, Inc. 401(k) Plan in the asset neighbourhood

Eileen Fisher, Inc. 401(k) Employee Savings PlanEileen Fisher, Inc. 401(k) E…$83MAlpha & Omega Semiconductor, Inc. 401(k) PlanAlpha & Omega Semiconductor,…$83MSmyrna Ready Mix 401(k) Profit Sharing Plan and TrustSmyrna Ready Mix 401(k) Prof…$83MOsg, Inc. Savings and Retirement PlanOsg, Inc. Savings and Retire…$83MMw Life Sciences Retirement Savings PlanMw Life Sciences Retirement …$83M
End-of-year total assets ($M) among Alpha & Omega Semiconductor, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Scale-class filing particulars (2023)

Total Assets (Beginning of Year)$64M
Net Assets (End of Year)$83M
Net Income$19M
Employer EIN770553536
Plan Effective Date2004-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Alpha & Omega Semiconductor, Inc.)

Sponsor-wide plan assets over time

All Alpha & Omega Semiconductor, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$105M 65.49388728678063% vs 2022
2024 filing year
$40M$60M$80M$100M$120M 202220232024 $63.6M $105M ▲ +65.5%
Year Plans Participants Total Assets
2022 1 656 $64M
2023 1 790 $83M
2024 1 769 $105M

Nearby 401(k) Plans in California

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Alpha & Omega Semiconductor, Inc. 401(k) Plan vs. nearby 401(k) plans in California, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000200000250000 -200204060 Total assets ($B) Participants Alpha & Omega Semiconductor, Inc. 401(k) Plan, Total assets ($B): 0.082987263 · Participants: 790Alpha & Omega Semiconductor, Inc. 401(k) PlanWells Fargo & Company 401(k) Plan, Total assets ($B): 51.831350351 · Participants: 193919Wells Fargo & Company 401(k) PlanGoogle LLC 401(k) Savings Plan, Total assets ($B): 39.047152408 · Participants: 122867Google LLC 401(k) Savings PlanOracle Corporation 401(k) Savings and Investment Plan, Total assets ($B): 26.320437734 · Participants: 63105Oracle Corporation 401(k) Savings and Investment PlanIntel 401(k) Savings Plan, Total assets ($B): 22.17918189 · Participants: 59863Intel 401(k) Savings PlanApple 401(k) Plan, Total assets ($B): 19.779511539 · Participants: 106111Apple 401(k) Plan
Alpha & Omega Semiconductor, Inc. 401(k) Plan vs. nearby 401(k) plans in California, assets vs. participants
Compare Alpha & Omega Semiconductor, Inc. 401(k) Plan side-by-side with 3 peers →

Alpha & Omega Semiconductor, Inc. 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside California, the nearest 401(k) by assets is Eileen Fisher, Inc. 401(k) Employee Savings Plan in NY ($83M); by covered participants it is Innospec 401(k) and Profit Sharing Plan in CO (790 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (790 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Alpha & Omega Semiconductor, Inc. 401(k) Plan assets move in 2023? ▼
Alpha & Omega Semiconductor, Inc. 401(k) Plan surged - up 30.4% during 2023, from $64M to $83M. Reported net income was $19M.
How have Alpha & Omega Semiconductor, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Alpha & Omega Semiconductor, Inc.'s sponsor-wide assets grew 65.5%, from $64M to $105M.
Where does Alpha & Omega Semiconductor, Inc. 401(k) Plan rank by assets among Form 5500 filers? ▼
Alpha & Omega Semiconductor, Inc. 401(k) Plan ranks in the 90th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 10% of all filed plans by assets).
Which 401(k) plans are similar in size to Alpha & Omega Semiconductor, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Eileen Fisher, Inc. 401(k) Employee Savings Plan in NY ($83M, 770 participants).
Which 401(k) plans cover a similar participant headcount to Alpha & Omega Semiconductor, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Innospec 401(k) and Profit Sharing Plan in CO (790 participants, $100M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 770553536.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.